base: add memutil.h

ortools/base/BUILD.bazel

@@ -367,6 +367,14 @@ cc_library(
     deps = [],
 )
 
+cc_library(
+    name = "memutil",
+    hdrs = ["memutil.h"],
+    deps = [
+        "@com_google_absl//absl/strings",
+    ],
+)
+
 cc_library(
     name = "murmur",
     hdrs = ["murmur.h"],

ortools/base/memutil.h

@@ -0,0 +1,28 @@
+// Copyright 2010-2024 Google LLC
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef OR_TOOLS_BASE_MEMUTIL_H_
+#define OR_TOOLS_BASE_MEMUTIL_H_
+
+#include "absl/strings/internal/memutil.h"
+
+namespace strings {
+char* memdup(const char* s, size_t slen) {
+  void* copy;
+  if ((copy = malloc(slen)) == nullptr) return nullptr;
+  memcpy(copy, s, slen);
+  return reinterpret_cast<char*>(copy);
+}
+}  // namespace strings
+
+#endif  // OR_TOOLS_BASE_MEMUTIL_H_